Pneumatic test device for safety valve of pressure gas storage tank

Abstract

The utility model relates to the technical field of air compressor air storage tanks, and discloses a pneumatic test device for a pressure air storage tank safety valve, which comprises a mounting frame, a driving cylinder is arranged on one side of the bottom end of the mounting frame and is connected with an opening and closing valve through a pipeline, and the telescopic end of the driving cylinder is connected with a driving plate. A driving shaft is arranged at the top end of the driving plate, the driving shaft is movably connected with the mounting frame, the end, away from the driving plate, of the driving shaft penetrates out of the top end of the mounting frame and then is provided with a push rod, a connecting frame is movably arranged at the end of the push rod, and the connecting frame is connected with a safety valve handle; according to the utility model, the working intensity can be reduced, the working efficiency can be improved, the working safety is ensured, the structure is simple, the operation is simple and convenient, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor gas storage tanks, in particular to a pneumatic test device for a safety valve of a pressure gas storage tank. Background Art

[0002] An air compressor air tank, also known as a compressed air storage tank, is a pressure vessel specially used to store compressed air. Its function is to store air as a buffer, avoid frequent loading and unloading of the air compressor, and remove most of the liquid water. It is mainly used in conjunction with air compressors, refrigerated dryers, filters and other equipment to form a power source (compressed air station) for industrial production.

[0003] According to the "Rules for Periodic Inspection of Pressure Vessels" (TSG R7001-2013), pressure vessels are generally subject to the first periodic inspection within 3 years after being put into use. The subsequent inspection period shall be determined by the inspection agency based on the safety status level of the pressure vessel. The safety valve, one of its safety accessories, must be inspected every year by a qualified inspection agency, and the user unit shall conduct a manual test once a week and an automatic exhaust test once a month. Since the gas storage tank is usually several meters high, a ladder must be set up to climb to the top of the gas storage tank for the manual exhaust test. Since the top of the gas storage tank is an arc-shaped structure and lacks stable support, it is very easy to cause people to slip, and the manual opening and closing of the safety valve also has the problem of compressed gas impact and injury, which poses a great safety hazard. Therefore, there is an urgent need for a pneumatic test device for the safety valve of a pressure gas storage tank that does not require workers to climb to a high place and has high safety. Utility Model Content

[0004] The utility model aims to provide a pneumatic test device for a safety valve of a pressure gas storage tank, which can reduce work intensity, improve work efficiency, ensure work safety, and has a simple structure, easy operation and strong practicality.

[0005] The utility model adopts the following technical solutions:

[0006] A pneumatic test device for a pressure gas storage tank safety valve comprises a mounting frame, a driving cylinder is arranged on one side of the bottom end of the mounting frame, the driving cylinder is connected to an opening and closing valve through a pipeline, the telescopic end of the driving cylinder is connected to a driving plate, a driving shaft is arranged on the top end of the driving plate, the driving shaft is movably connected to the mounting frame, and a push rod is arranged on the end of the driving shaft away from the driving plate after passing through the top end of the mounting frame, a connecting frame is movably arranged on the end of the push rod, and the connecting frame is connected to the safety valve handle.

[0007] Preferably, a movable groove is provided on the driving plate, a driving part is slidably provided in the movable groove, and the driving part is connected to the telescopic end of the driving cylinder.

[0008] Preferably, the driving part comprises two limiting plates located on both sides of the moving groove, and a roller is arranged between the two limiting plates.

[0009] Preferably, the roller is rotatably arranged between the two limiting plates.

[0010] Preferably, the push rod is vertically connected to the drive shaft.

[0011] Preferably, a ball head is provided at one end of the push rod away from the driving shaft, a cavity is provided inside the connecting frame, and an adjustment groove communicating with the cavity is provided on the side wall of the connecting frame; the ball head is located in the cavity and abuts against the inner wall of the cavity.

[0012] Preferably, the ball head is provided with a mounting groove, a ball is movably provided in the mounting groove, and the ball abuts against the inner wall of the cavity.

[0013] Preferably, a receiving groove is provided at one end of the connecting frame away from the push rod, and fixed connecting members are provided on the side walls on both sides of the receiving groove.

[0014] Preferably, the mounting frame includes a vertically arranged mounting plate, a support plate is vertically arranged at the bottom of the mounting plate, the drive shaft is rotatably arranged on the mounting plate, and the drive cylinder is arranged on the support plate.

[0015] Preferably, a connecting plate is provided at one end of the mounting plate away from the supporting plate, and a fixing piece is provided on the connecting plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model drives the driving plate to move by driving the cylinder, and drives the driving shaft to rotate at the same time; the push rod can be used to push up the connecting frame, thereby pushing up the handle of the safety valve connected to the connecting frame, and the valve opening operation is realized; as the driving cylinder is reset, the handle can be driven to reset, thereby avoiding direct manual contact with the handle and ensuring safety; at the same time, the opening and closing valve that controls the driving cylinder can be set at a position at the bottom of the gas tank that is convenient for workers to contact, thereby avoiding the problem of workers climbing to the top of the gas tank, reducing labor intensity, improving work efficiency, and having high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the driving unit of an embodiment of the present application;

[0019] Figure 3 It is a cross-sectional view of the connecting frame according to the embodiment of the present application. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:

[0021] like Figures 1 to 3 As shown, a pneumatic test device for a pressure gas storage tank safety valve described in the utility model comprises a mounting frame 1, a driving cylinder 2 is arranged on one side of the bottom end of the mounting frame 1, the driving cylinder 2 is connected to an on-off valve through a pipeline, and the on-off valve is not shown in the figure, wherein the driving cylinder 2 adopts a single-acting cylinder, and the pipeline adopts a high-pressure hose, the high-pressure hose is respectively connected to the air inlet and the air outlet of the driving cylinder 2 and then connected to the two-way on-off valve, the air inlet of the two-way on-off valve can be connected to the air storage pipe through the high-pressure hose, the air storage tank is used to provide a power source for the driving cylinder 2, and the two-way on-off valve is connected to the air storage pipe. The closing valve is arranged at the middle and lower part of the gas tank for the convenience of workers to operate; the telescopic end of the driving cylinder 2 is connected with a driving plate 3, and a driving shaft 4 is arranged at the top of the driving plate 3. The driving shaft 4 is movably connected with the mounting frame 1, and a push rod 5 is arranged after the end of the driving shaft 4 away from the driving plate 3 passes through the top of the mounting frame 1, and the push rod 5 is vertically connected with the driving shaft 4, and a connecting frame 6 is movably arranged at the end of the push rod 5, and the connecting frame 6 is connected with the safety valve handle. In the initial state, since the handle of the safety valve is in a closed state, the push rod 5 is in an inclined state at this time, and is arranged at an acute angle with the handle. When working, the driving cylinder 2 is controlled to open, and the driving cylinder 2 extends to push the driving plate 3 to rotate with the driving shaft 4, and the driving shaft 4 drives the push rod 5 to rotate, and the handle is lifted through the connecting frame 6, thereby realizing the opening operation of the safety valve. When the driving cylinder 2 is reset, it will drive the handle to reset, and the safety valve is closed. The whole operation not only avoids the problem of workers climbing, but also eliminates the direct contact between workers and the handle, ensuring the safety of work and improving work efficiency.

[0022] In this embodiment, the mounting frame 1 includes a vertically arranged mounting plate 1-1, a support plate 1-2 is vertically arranged at the bottom of the mounting plate 1-1, a driving shaft 4 is rotatably arranged on the mounting plate 1-1, and a driving cylinder 2 is arranged on the support plate 1-2. A connecting plate 7 is arranged at one end of the mounting plate 1-1 away from the support plate 1-2, and a fixing member is arranged on the connecting plate 7. The fixing member can be a bolt and a nut, or can be tied by a metal wire through a connecting hole provided on the connecting plate 7 according to the actual situation. The fixing member is selected according to the actual situation, and the mounting plate 1-1 is fixedly arranged on the housing of the safety valve by using the fixing member.

[0023] Furthermore, a movable groove 8 is provided on the driving plate 3 in the vertical direction, and a driving part is slidably provided in the movable groove 8, and the driving part is connected to the telescopic end of the driving cylinder 2. When the driving cylinder 2 is working, the telescopic end moves out, and will gradually push the driving part, thereby pushing the driving plate 3 to move; because the amplitude of the safety valve handle when opened is not large, usually when the push rod 5 is in a horizontal state, the safety valve is opened, so the length of the movable groove 8 does not need to be too long, and the movement amplitude of the driving plate 3 will not be too large.

[0024] In addition, the driving part includes two limit plates 9 located on both sides of the moving groove 8, and a roller shaft 10 is arranged between the two limit plates 9, and the roller shaft 10 is movably located in the moving groove 8. Preferably, the roller shaft 10 is rotatably arranged between the two limit plates 9, and the telescopic end of the driving cylinder 2 is connected to one of the limit plates 9. The rotation arrangement of the roller shaft 10 between the two limit plates 9 can reduce the friction between the roller shaft 10 and the driving plate 3 during operation, thereby extending the service life of both.

[0025] Furthermore, a ball head 11 is provided at one end of the push rod 5 away from the drive shaft 4, a cavity 12 is provided inside the connecting frame 6, and an adjustment slot 13 communicating with the cavity 12 is provided on the side wall of the connecting frame 6, and the size of the adjustment slot 13 is smaller than the size of the ball head 11; the ball head 11 is located in the cavity 12 and abuts against the inner wall of the cavity 12; as the drive shaft 4 rotates, the push rod 5 will be driven to move synchronously, and the position of the ball head 11 will change, thereby lifting the connecting frame 6 to realize the opening operation of the handle. Preferably, a mounting slot is provided at the top of the ball head 11, and a ball 14 is movably provided in the mounting slot, and the ball 14 abuts against the inner wall of the cavity 12. The provision of the ball 14 can reduce the wear on the inner wall of the cavity 12.

[0026] Furthermore, a receiving groove 15 is provided at one end of the connecting frame 6 away from the push rod 5 for accommodating the handle of the safety valve, and fixed connecting parts are provided on the side walls on both sides of the receiving groove 15. The fixed connecting parts can be bolts and nuts as long as the handle and the receiving groove 15 can be fixedly connected.

[0027] The utility model discloses that when the safety valve needs to be opened, it is only necessary to operate the two-way opening and closing valve arranged on the lower middle part of the gas storage tank, which not only avoids the high-intensity work caused by workers climbing to the top of the gas storage tank, but also reduces the potential safety hazard and ensures the work efficiency at the same time. The utility model has the advantages of simple structure, easy operation, strong practicality and high safety.

Claims

1. A pneumatic test device for a safety valve of a pressure gas storage tank, characterized in that: It includes a mounting frame, a driving cylinder is arranged on one side of the bottom end of the mounting frame, the driving cylinder is connected to an opening and closing valve through a pipeline, the telescopic end of the driving cylinder is connected to a driving plate, a driving shaft is arranged on the top end of the driving plate, the driving shaft is movably connected to the mounting frame, and a push rod is arranged on the end of the driving shaft away from the driving plate after passing through the top end of the mounting frame, a connecting frame is movably arranged on the end of the push rod, and the connecting frame is connected to the safety valve handle.

2. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 1 is characterized in that: The driving plate is provided with a moving groove, a driving part is slidably provided in the moving groove, and the driving part is connected with the telescopic end of the driving cylinder.

3. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 2 is characterized in that: The driving part comprises two limiting plates located on both sides of the moving groove, and a roller shaft is arranged between the two limiting plates.

4. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 3 is characterized in that: The roller shaft is rotatably arranged between the two limiting plates.

5. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 1 is characterized in that: The push rod is vertically connected to the driving shaft.

6. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 5 is characterized in that: A ball head is arranged at one end of the push rod away from the driving shaft, a cavity is opened inside the connecting frame, and an adjustment groove communicating with the cavity is opened on the side wall of the connecting frame; the ball head is located in the cavity and abuts against the inner wall of the cavity.

7. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 6 is characterized in that: The ball head is provided with a mounting groove, a ball is movably arranged in the mounting groove, and the ball abuts against the inner wall of the cavity.

8. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 7 is characterized in that: An end of the connecting frame away from the push rod is provided with a receiving groove, and the side walls on both sides of the receiving groove are provided with fixed connecting pieces.

9. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 1 is characterized in that: The mounting frame includes a vertically arranged mounting plate, a support plate is vertically arranged at the bottom of the mounting plate, the driving shaft is rotatably arranged on the mounting plate, and the driving cylinder is arranged on the support plate.

10. The pneumatic test device for the safety valve of a pressure gas storage tank according to claim 9, characterized in that: A connecting plate is arranged at one end of the mounting plate away from the supporting plate, and a fixing piece is arranged on the connecting plate.

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